FCC Warning This equipment has been tested and found to comply with the lim- its for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.
Fast Ethernet Stackable Hubs User’s Guide BOUT UIDE This guide discusses how to install and use the 16/24 port stack- able Fast Ethernet Hubs Conventions References in this manual to the 16/24 port stackable Fast Ethernet Hubs are frequently written simply as “hub” or “hubs”...
100BASE-TX hubs. ♦ Appendix A, Cables and Connectors. Provides specifi- cations on the cables and connectors used with the hubs. ♦ Appendix B, Specifications. Lists the hub’s specifica- tions.
The hubs in the series, available in 16-port and 24-port models, can be stacked with up to four hubs in a stack. A stack of four 24- port hubs gives a total of 96 Fast Ethernet ports. A 16/24 port...
♦ LED indicators for Power, FX Link/Rx, 100M Activity, 100M Collision and 100M Link/Rx. ♦ Scalable stack containing up to 4 units for a total 64 or 96 (depending on model) 100Mbps UTP/STP ports. ♦ Uplink port allows easy linking of two Fast Ethernet hub stacks to further expand your network.
♦ Four rubber feet to be used for shock cushioning ♦ Screws and two mounting brackets ♦ This User’s Guide Inspect the hub and all accompanying items. If any item is dam- aged or missing, report the problem immediately to your dealer. Unpacking and Setup...
Identifying External Components This section identifies all the major external components of the hub. Both the front and rear panels are shown, followed by a de- scription of each panel feature. The indicator panel is described in detail in the next chapter.
In 24-port model, port 12 and the Uplink-1 port, port 24 and the Uplink-2 is really the same port, except that their pinouts are different. Do not use both Port 12 and the Uplink-1 port, Port 24 and the Uplink-2 port at the same time.
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Daisy-Chain OUT port of the previ- ous hub in the stack (usually placed immediately above it). A cascade of four hubs can be created in this way. The first and last hubs in the stack use only one of the daisy-chain ports, while the others use both.
Fast Ethernet Stackable Hubs User’s Guide Installing the Hub Installation The site where you install the hub stack may greatly affect its per- formance. When installing, consider the following pointers: ♦ Install the hub stack in a fairly cool and dry place.
Rack Mounting The hub can be mounted in an EIA standard-size, 19-inch rack, which can be placed in a wiring closet with other equipment. At- tach the mounting brackets at the hub’s front panel (one on each side), and secure them with the provided screws.
Fast Ethernet Stackable Hubs User’s Guide NDERSTANDING NDICATORS Before connecting network devices to the hub, take a few minutes to look over this section and familiarize you with the front panel LED indicators of your stackable Fast Ethernet hub, depicted be- low. Understanding Indicators...
This indicators indicate data collisions on the respective 100Mbps Fast Ethernet segments of the hub. (If several hubs are stacked or linked together, all of them should detect and indicate the same collision, since collisions span the entire net- work segment.) Whenever a collision is detected, the respective COL indicator will briefly blink amber.
This indicator green when the port is connected to a 100Mbps Fast Ethernet station , If the station to which the hub is con- nected is powered off, or if there is a problem with the link, the LED will remain off. And the indicator blinking green when the data will be received to all other connected ports.
Use the provided daisy-chain cable to connect the Daisy-Chain OUT port on the rear panel of one hub to the Daisy-Chain IN port on the hub below it, as shown in the figure below. Repeat this pro- cedure for each hub to be included in the stack.
Fast Ethernet Stackable Hubs User’s Guide Hubs should not be added to the stack or removed from the stack while the power is on to any hub in the stack. Always turn power to the entire stack before adding or removing hubs.
Class II hubs or hub stacks. Hub to End-Station Connection After installing the hub properly, it can support up to 24 ports or 16 port end-station connections. Fast Ethernet connections re- quire either a Category 5 UTP cable or a STP cable. These cables can be up to 100 meters long.
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Fast Ethernet Stackable Hubs User’s Guide When connecting a PC or a server, the system being connected should have a Fast Ethernet network interface card with a twisted-pair port. The following figure shows a typical connection between the hub and end-stations:...
Fast Ethernet Stackable Hubs User’s Guide Hub-to-Hub Uplink You can link two hubs or hub stacks to each other using any of the twisted-pair ports or the Uplink port. Linking hubs using ordi- nary twisted-pair ports requires crossover twisted-pair cables;...
Fast Ethernet crossover cable: There is 100BASE-FX optional module that may be added to any of the hubs in the series. Each of the modules offers a 100BASE- FX additional network interface that allows for greater flexibility in how these hubs may be used in a network.
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Fast Ethernet Stackable Hubs User’s Guide We recommend that you retain the dust cover in case you need to remove the module for an extended period sometime in the future. Making Connections...
ONNECTORS 100BASE-TX Fast Ethernet Cable and Connectors ♦ Cable characteristics: 0.4 to 0.6 mm (22 to 26 AWG) 4- pair (only two pairs/four wires are used for 100BASE- TX); Category 5 unshielded twisted-pair or EIA/TIA- 568 compliant, 100-ohm shielded twisted-pair ♦...
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Fast Ethernet Stackable Hubs User’s Guide Straight Twisted-Pair Cable Pinouts Contact MDI-X Signal MDI Signal RD+ (receive) TD+ (transmit) RD- (receive) TD- (transmit) TD+ (transmit) RD+ (receive) Not used Not used Not used Not used TD- (transmit) RD- (receive) Not used...
The wiring at just one end of the cable needs to be modified. At the other end of the cable, connect wires 1 and 2 to con- tacts 3 and 6 respectively. Likewise, connect wires 3 and 6 to contacts 1 and 2. Refer to the following diagram:...
Hub Status: Power, FX Link/Rx, 100M Activity, 100M Collision Port Status (per port): 100M Link/Rx Environmental and Physical Power Supply: 100 to 240 VAC, 50 or 60 Hz internal universal power supply Power Consumption: 40W (max.) Dimensions: 440mm × 200mm × 44mm, 19-inch rack-mountable Operating Temperature: –10 to 40°C...